Combined oscillatory reciprocatory self-centering pump



J. B. BOYETT Dec. 28, 193 7.

COMBINED OSCILLATORY RECVIPRO'CATORY SELF CENTERING PUMP Filed July 17, V1936 Patented Dec.V 28, 1.937

SELF-CENTERING P'Ulul'A ooMmNEnoscniLA'roRY nEolPRocAfr-ORY l r Jessen. Boyett, Nashville, Gah Y .Applicationiuiyit 1932;,.serialim4 91,2071M jv i, 2C1a'imS-- (Cl.103;`.;`.178)i My,v invention relates to a combined oscillatory reci-procatory selff'centering pump. The pump structure, iniaccordance.

,by any suitable solution for relieving-them.` of diseases, noxious insects land the like-but itisto beeunderstood'that a pump,` in accordance withw Illy/invention Yis to* loe-y used in any. connection or f for-any purpose forA Whichf itisfound applicable,

Theob'jectfofmy inventionis to provide, ina

man-ner -Yasfhereinafterfs'et -forth `an oscillatoryfre- Y ciprocatory4V selffcentering pump for expelling liquids, fludsrand solutions, Y 1 v rA further object ofmy invention isvtoprovide,- inalmanneras hereinafter setforth, an oscillatory-recproabory ,selfcentering fpump .havingA ay Valvecontrolled tubular combined-suction -and` expelling plunger. l Y. ,f .Y i A- further. objectY oiamy'ginvention is to provide, in a mannenashereinafter. referred vto apump, ofthe IclassV referred `to 'incli'idingfar reciprocatory plunger` operated without the-employment of connecting rods and withtheypurnpfsoconstructed,

sqarrangedand so supported wherebysidestrain isf'gcomple'tely.eliminated. von {theplunger during.

the operationV ofthe latter resulting in the ,lifeof the plunger `loeing-materially..increased; l

A further. object of my-invention is jto provider invia-manner as hereinafter set forthv angoscil'- Y latory-reciprocatory pumpwhichjcan .bemounted f `Afurther-olcpject'ofmyfinvention is horizontally, vertically or'inpany other, position suspended at its yends .uponiuniversaljjoint connections=havingmeans `to prevent the pump-from rocking .during the `operation thereof.

iso-provide,

' in a manner as Yhereinafter:set forth,gan.'oscil latoryz-reciprocatory-purnp suspended at one endupona universal jointgconnectionto formagpivot A when occasion requires 'and comparatively inex'- pensiyeto slet up.

l,With i the.foregoing,.andl other v.objects which may! hereinafter, appear,- the inventionconsists- @wie ngi/,sk .eesiwtoe egebleaiogand-[are `with my: invention is Vdesigned',primarily'for use .,n con-,- nectionwithmachines forthe spraying of plants rangement, of parts as, .wi1l..be`1nore. specifically.

described, -and 1 are` as illustrated in the. accomv panyi'ngvdrawing, whereinfisV lshown an ernloodi-L` mentor' the invention, butin ,is to be. understood. that4 changes, y,variations .and 'modications'mayj f be resortedto `Whiclrrfall. withinthe scope of'thel invention asclaimed.

. In the drawing;Y

. Figure v1` ,illustrates in.'1on'gitudinai sectionfia.

self-centering. pump-in accordancf'el with my.in- Y vention,

Figure. 2. is asection online 2%2, Figure 1, and ..-Figure`3'is afrag'mentary View-in top j plan illus# tratingthedriven endof 'tl.'ie,p,ump`.

- 'Th'ere is illustrated' an 'u'psi'.anding` rotatable.,

Tle'r'e isV als'oillurstr'atejd an upstar'ding'stationaryg socketformingmemberj; y j n The pump.` structure," which gis e mounted` 'al mannerto lprog/ide for the bodiiyosciuation tirera4 of includes, afpump- .body9,9, a`jlsa1ye controlled' suctionpipe. I 013; a reciprocatory vplunger I Il I. vandanairf chamber formingelementjj 02;' The pump bodyV 99llconsistsfof cylinder' IIl3 open at each end; ak hollow head I ll4"`open at itsV reargformedwithjan opening" IDS-.in ts'bottomiandfan opening'. Illinl ftfslton normally .closediby a .n111eil,|ll, anuoutwardlyfdirectedextension `I 08 at the front fof; ,thev lfiead I Bland a stufng`- boxfelem'entl I jsecured; to andv inde'r'l'03.' The'ele'mentI lil isformediwith a por-A tion". I I I- of enlarged inner. diameter .provided Lat its, topjwith ,anupstfanding tubular extension;II2 which.,is'.inte'inally` threaded; The "cylinder I'I'I34 Xtendsinto; the inner 'side'y ofhead;i IM" andy threadedly 'engages therewith, The head1 04 has an integralinternallyi threaded collar II 3i lat its bottom; which .communicates with opening |595; The .inner diameter Qfthepartj I I4of1stufling box element llilcorresponds'to thatofthewmajor portion off-the length of jjtliejplunger IUI;

The plunger 4 [Il I Ycomprises` gatubular member II5`w-hi`ch` is'openat each endjandqitsv bodygin proxir'nitjfto"L its forward end; is provided withj a pair, of [|62 The body of the memberL I I 5;'"a t'i ts forward end, is` reduced, asA at I I1; torforrn' thei forward diametricauy opposed dischargeutlts portion Vof VVrnernlo'er,v I I5 Ogreate'r" inner diameter Y than ,the remaining portion of s aidj'hodyq he Lend I Ifladiacent. theV forward" end of"` nierrleif I [5f: "The: forward l andrear enfds.v ofniernber fI I 5 are internallythreadedn e member, I l SItrarels 'ggamstme `inner jfa'cefof the' para Yl -loffeiement 3o extendinglrearwardlyfrom the. innerend ofcylj 50., Voutlets llare arrangedinth'e reducedforward l f ||0. Extending into and threadedly engaging with the forward end of member I |5 is the plunger head ||8 consisting of a peripherally threaded cylindrical member ||9 having its rear end constituting a valve seat |20 for a spring controlled check valve |2| arranged within member ||5. The portion of enlarged inner diameter of member ||5 provides a 4clearance for valve 2|. The controlling spring |22 for valve |2| is arranged within member ||5 and is interposed between valve |2| and an abutment |23 which is positioned in and bodily moves with member l5. Arranged upon member ||9 is a pair of oppositely disposed spaced cup washers |24. A spacer |25 is arranged between washers |24. Threadedly engaging with members ||9 is a pair of lock nuts |26, |21. The nut |26 locks the member ||9 to member ||5. The nuts |26, |21 lock the cup washers on member ||9. The latter is formed with notches |28 to facilitate the screwing thereof into member ||5. The nut |26 has notches |29 to facilitate the screwing thereof on member I9. The washers |24 travel against the inner face of cylinder |03. The rear end of vmember ||5 is closed by the stem. |30 which projects from the head |3| of a plug |32. The head |3| is formed with a spherical-shaped socket |33, a slot |34 in its top opening into socket |33, an opening |34a in its bottom leading from socket |33l and an annular socket |34b extending from the outer end of head |3| and communicating with Socket |33. The wall of socket |33 is threaded. Threadedly engaging with the wall of socket |33 is a peripherally threaded tubular wear take-up element |35 having a beveled inner end |36. The element |35 is secured in position by a lock nut |31. Extending into the inner end of element |35, as well as being secured thereto is a lubricant cup |38. The extension |08 is provided intermediate its ends with a spherical shaped socket |39, a skeleton rectangular boss |40 on its top, a slot |4| opening into the boss and into socket |39, a slot'|4|a opening at the bottom of the extension and into socket |39 and a socket |42 opening into socket |39. The wall of socket |42 is threaded. Threadedly engaging with the wall of socket |42 is a peripherally threaded tubular wear take-up element |43 having a beveled inner end |44. The element |43 is secured in position by a lock nut |445. Extending into the outer end of element |43, as well as being secured thereto, is a lubricant cup |45. n

Mounted in the socket forming member 18, as well as being secured thereto by a set screw |46, is a vertically disposed post |41 having a reduced upper end part |48 and a spherical enlargement |49 from which the part |48 extends. The enlargement l49' is mounted in the socket |39. The part |48 extends through slot |4| into boss |40. The p-art |49a of post |41 extends downwardly through slot |4|a. Interposed between extension |08 and socket forming member 18 is a grease retainer |50 through which extendspart |49a of post |41. The extension |08 and post |41 coact to provide a universal joint supporting connection or pivot for the forward end of the pump structure and the tank.

The upper end of shaft 68 has secured thereto by a set screw |5| a crank arm |52 formed with a Vertical opening |53 into which the lower end of a vertically disposed shiftable post 54 is anchored Vto arm |52 by a Vset screw |55 whereby the post largement |51 from which part 56 extends upwardly. The enlargement |51 is arranged in socket |33. The part |56 extends into the slot |34. The part |58 of post |54 extends downwardly through opening |3482 Interposed between head |3| and arm |52 is a grease retainer |59 through which extends the part |58 of post |54. 'I'he retainer |59 is carried by crank arm 52. The plug |32 coacts with the post |54 `to provide a universal joint supporting connection between the rear end of 'the pump structure and its operating means.

lThe universal joint supporting connections form a centering means for the pump plunger |0| with respect to the pump body and the latter with respect to the plunger during the oscillatory movement of the pump structure simultaneously with the reciprocatory movement of the plunger. The universal joint supporting connections also eliminate the employment of connectingrods for the pump structure, as well as eliminate excessive wear and side strain on the plunger during the reciprocation of the latter. The adjustable wear take-up elements compensate for wear of the spherical enlargements of the posts and the walls of the sockets in which said enlargements are seated.

The suction pipe |00 which is adapted to lead from a source of supply is of suitable length to depend into such source, and it includes an upstanding tubular pipe member |60 open at and provided with peripheral threads at each end and which may be of rigid or flexible material. The upper end of member |60 is secured to collar H3. The lower end of member |60 communicates with and is connected to the housing |6| of a spring controlled metallic Y reinforced resilient check valve |62 to prevent the Solution from running back into the source of supply on the expelling stroke of the plunger. f Secured to the lower end of and depending from housing |6| is a strainer element |63 providing a seat for valve |62.

The air chamber forming element |02 consists of an upstanding body |64EL having a tubular part |65 which opens at its upper end in a hollow spherical enlargement |66. The part |65 and enlargement |66 provide the air chamber. The part |65 is open at its lower end and has connected to such end a tubular nipple |68 which is connected to and opens into the tubular extension 2 of element ||0. The part |65 is formed with openings |69 which are adapted to communicate with discharge lines not shown. In certain uses or applications of this pump structure, it may not be necessary to have an air chamber mounted on the pump, and therefore the air chamber herein described may or may not be includedfin the general structure according as usepor application of the pump may require.

The outlets ||6, cylindrical member ||9, spring controlled valve 2| and abutment |23 provide the plunger with a valve controlled passage between the suction pipe |00 and the outlet of the pump body 99.

On the suction stroke of the plunger, the valve |2| is closed and the solution is drawn into the intake end of cylinder |03 and also into the head I8. Ihe solution drawn into the cylinder on the suction stroke of the plunger is shut off from the air vchamber by the cup washers and the closed position of valve |2|. On the expelling stroke of the plunger the solution passes through head 8, unseatsv valve |2| and passes lthrough outlets ||6 to the air chamber and is discharged from the latter. The valve |62 is.opened on the suction stroke of the plunger'but is closed on the expeiling stroke of the latter. After the initial Y operation of the plunger there will alwaysY be at the rear of the cup washers a body of solution to provide for a continuous discharge on Vthefo'peration of the machine.' Thepump cylinder is oscillated during the operation of thepump and simultaneously with the plunger.

What I claim is:

1. rIn a pump structure, a horizontally disposed oscillatory hollow body provided with an-,intake and an outlet, a combined oscillatory-reciprocatory plunger operating within and bodily oscil- Alating said body in unison therewith, an upstandfmeans providing supports for Vsaid body and plunger.

2. In a pumping structure, a head having a hollow portion open at one end, said portion being formed with an intake at right angles to said end, means for pivotally mounting said head outwardly adjacent to said hollow portion, a cylinder open at each end andconnected at one end to the said end of said portion, a hollow outlet structure Y encompassing and connected to the other end of the cylinder, said structure extended from and permanently communicating at its inner end lwith the said other end of the cylinder, a hollow plunger structure operating in said cylinder and through'the inner end of said outlet structure,

said plunger structure formed of two parts of I different outer diameters, said part of smaller diameter bearing against the inner face of 'and extending inwardly and outwardly. with respect to the inner end of said outlet structure, said part of larger diameter bearing against the inner face of said cylinder, said part of reduced outer diameter being provided intermediate its ends with means for establishing communication between the interior of the plunger structure and said cylinder, said plunger structure beingV proy vided therein with-a valve controlled fluid conductor between its inner end and said means for controlling communication between said hollow portion and said means, an eccentrically mounted revoluble member, a pivot fixed to said member,

and meansrfor loosely connecting saidr pivotV with and for closing the outer end of the plunger structure.

JESSE B. BOYETT. 

